Paramagnetic spin catalysis of a radical recombination reaction

1996 ◽  
Vol 6 (3) ◽  
pp. 261-279 ◽  
Author(s):  
Boris F. Minaev
Keyword(s):  
Recombination Reaction ◽  
Radical Recombination

Spin catalysis of the radical recombination reaction

1995 ◽  
Vol 233 (3) ◽  
pp. 315-318 ◽  
Author(s):  
Anatoly L. Buchachenko ◽  
Lyudmila V. Ruban ◽  
Eugene N. Step ◽  
Nicholas J. Turro
Keyword(s):  
Recombination Reaction ◽  
Radical Recombination

Pressure effects on the radical–radical recombination reaction of photochromic bridged imidazole dimers

2014 ◽  
Vol 16 (33) ◽  
pp. 17537-17540 ◽  
Author(s):  
Katsuya Mutoh ◽  
Jiro Abe
Keyword(s):  
High Pressure ◽  
Pressure Effects ◽  
Recombination Reaction ◽  
Radical Recombination ◽  
Relationship Of ◽  
Radical Interaction

We revealed the structure–entropy relationship of the photochromism of bridged imidazole dimers and that the radical–radical interaction could be controlled by applying high pressure.

Photo-control of the thermal radical recombination reaction: photochromism of an azobenzene-bridged imidazole dimer

2015 ◽  
Vol 87 (6) ◽  
pp. 511-523 ◽  
Author(s):  
Katsuya Mutoh ◽  
Hiroki Arai ◽  
Yoichi Kobayashi ◽  
Jiro Abe
Keyword(s):  
Recombination Reaction ◽  
Long Distance ◽  
Radical Pairs ◽  
Photochromic Compounds ◽  
Radical Recombination ◽  
Azobenzene Moiety ◽  
Potential Applications ◽  
New Type ◽  
Holographic Displays ◽  
Recombination Reactions

AbstractAmong various kinds of photochromic compounds, bridged imidazole dimers have been known as fast photo-switch molecules. Bridged imidazole dimers have opened up various potential applications to photochromic lenses and real-time holographic displays. The optical properties of bridged imidazole dimers strongly depend on the bridging moiety to tether two imidazole rings. Therefore, the control of the bridging structure by introducing another photochromic moiety would increase the versatility of bridged imidazole dimers. In this study, we designed and synthesized a new type of the bridged imidazole dimer 1 which has the azobenzene moiety as the photo-responsive linker. The cis–trans isomerization of the azobenzene moiety enables to change the distance between the photogenerated radical pairs. The two structural isomers, cis–1 and trans–1, are observed and both compounds undergo the photochromism to produce the imidazolyl radicals. We found that the two imidazolyl radicals generated from cis–1 are close enough to form the intramolecular C–N bond, whereas the imidazolyl radicals of trans–1 undergo the intermolecular recombination reaction due to the long distance between the radicals. Our results demonstrate the control of intra-/intermolecular radical recombination reactions by the combination of the two photochromic compounds.

scholarly journals In Vivo Identification of Intermediate Stages of the DNA Inversion Reaction Catalyzed by the Salmonella Hin Recombinase

Genetics ◽  
1998 ◽  
Vol 149 (4) ◽  
pp. 1649-1663
Author(s):  
Oliver Z Nanassy ◽  
Kelly T Hughes
Keyword(s):  
Amino Acids ◽  
Biochemical Analysis ◽  
Mutational Analysis ◽  
Recombination Reaction ◽  
Recombination Site ◽  
Dna Inversion ◽  
Hin Recombinase ◽  
One Step ◽  
A Site

Abstract The Hin recombinase catalyzes a site-specific recombination reaction that results in the reversible inversion of a 1-kbp segment of the Salmonella chromosome. The DNA inversion reaction catalyzed by the Salmonella Hin recombinase is a dynamic process proceeding through many intermediate stages, requiring multiple DNA sites and the Fis accessory protein. Biochemical analysis of this reaction has identified intermediate steps in the inversion reaction but has not yet revealed the process by which transition from one step to another occurs. Because transition from one reaction step to another proceeds through interactions between specific amino acids, and between amino acids and DNA bases, it is possible to study these transitions through mutational analysis of the proteins involved. We isolated a large number of mutants in the Hin recombinase that failed to carry out the DNA exchange reaction. We generated genetic tools that allowed the assignment of these mutants to specific transition steps in the recombination reaction. This genetic analysis, combined with further biochemical analysis, allowed us to define contributions by specific amino acids to individual steps in the DNA inversion reaction. Evidence is also presented in support of a model that Fis protein enhances the binding of Hin to the hixR recombination site. These studies identified regions within the Hin recombinase involved in specific transition steps of the reaction and provided new insights into the molecular details of the reaction mechanism.

scholarly journals Chromosomal transformation inBacillus subtilisis a non-polar recombination reaction

2016 ◽  
Vol 44 (6) ◽  
pp. 2754-2768 ◽  
Author(s):  
Begoña Carrasco ◽  
Ester Serrano ◽  
Humberto Sánchez ◽  
Claire Wyman ◽  
Juan C. Alonso
Keyword(s):  
Recombination Reaction
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